These adaptive traits may be structural, behavioral or physiological.

These adaptive traits allow species to grow in very harsh and dry areas with low rainfall.

Couldn't the disorder be just a side effect of some truly adaptive trait?

The black fetish is obviously an adaptive trait, a response to peculiar cultural and environmental conditions.

Why would intelligence ever be an adaptive trait?

Pollination syndrome is the set of adaptive traits which help flowers to get pollinated.

The Darwinian adaptive trait of our time is the ability to figure out when we are being lied to on television.

When selection is intense and persistent, adaptive traits (such as capture-bonding) become universal to the population or species.

When selection is intense and persistent, adaptive traits become universal to the population or species, which may then be said to have evolved.